There are an estimated three million Afghan refugees living in Pakistan, either officially or unofficially, most of whom left their country to escape conflict in the 1980s and 1990s.
But they are viewed with deep suspicion inside Pakistan and routinely accused by authorities of harbouring militants.
"Under the National Action Plan against terrorism, some 11,000 Afghans would be expelled from Azad Kashmir," senior police official Faheem Abbasi told a press conference in Muzaffarabad, the capital of Azad Kashmir.
Read: Pakistan to register 1.4m Afghan refugees by July: minister
The plan, which involved the outlawing of militant groups, registration of seminaries and crackdown on hate speech, was announced in the wake of a Taliban massacre that killed 154 people, mostly schoolchildren, in December.
Pakistan also lifted a six-year moratorium on the death penalty and announced the establishment of military courts in the case of terror offences.
Twelve suspects have so far been arrested over the school attack in Peshawar, most of them Pakistani nationals, according to the army.
But the killings have hardened prejudices toward Afghan refugees, with more than 30,000 leaving Pakistan between January and the first week of February, according to figures released by the International Organisation for Migration.
Pakistan plans to register the 1.4 million Afghan refugees currently living in the country illegally over the next four months, with a view to eventually repatriating them.
Read: Time to go home: Fresh crackdown to target unregistered Afghan refugees
Abbasi said the home department was also set to outlaw 64 militant outfits in Kashmir that are also banned in the rest of Pakistan, and create a new anti-terror force comprising 500 personnel.
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